Comments on: AR Five Seven: 5.7×28mm AR Upper http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/ Firearms not Politics Sat, 21 Nov 2009 13:38:33 +1300 http://wordpress.org/?v=2.8.5 hourly 1 By: bob http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-5911 bob Sun, 01 Feb 2009 11:56:20 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-5911 Davis, How does the thing operate? The site says it's recoil operated, but I want to make sure the bolt is actually locking somehow before I buy one. Please tell me it's not straight blowback... Davis, How does the thing operate? The site says it’s recoil operated, but I want to make sure the bolt is actually locking somehow before I buy one.

Please tell me it’s not straight blowback…

]]> By: Ethan http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-4227 Ethan Sun, 21 Dec 2008 01:17:38 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-4227 The ar-fiveseven upper I put on my lower is more than I hoped for. It worked perfectly, with no problames at all!! Accurate to sub-moa at 50 yrds. and good to 100 with a propper scope. Moreover, any one with a suppressor for the 223,(it will thread on to this barrel) will find the only noise is the recoil buffer slamming past your ear in the tube.(with sub-sonics) Of-course a bit of a crack with standard 5.7 ammo. This set up, with an EOtech or other such sight is nothing less than a pleasure to shoot. I am only put off by the the length of the upper rail. The rail of the upper by necessity is short, so no bad-ass set-ups with magnifiers and such, but with three full length rails at 3/6/9 o'clock at no extra cost, it more than makes up for lack of top rail. The ar-fiveseven upper I put on my lower is more than I hoped for. It worked perfectly, with no problames at all!! Accurate to sub-moa at 50 yrds. and good to 100 with a propper scope. Moreover, any one with a suppressor for the 223,(it will thread on to this barrel) will find the only noise is the recoil buffer slamming past your ear in the tube.(with sub-sonics) Of-course a bit of a crack with standard 5.7 ammo. This set up, with an EOtech or other such sight is nothing less than a pleasure to shoot. I am only put off by the the length of the upper rail. The rail of the upper by necessity is short, so no bad-ass set-ups with magnifiers and such, but with three full length rails at 3/6/9 o’clock at no extra cost, it more than makes up for lack of top rail.

]]> By: nick http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-3222 nick Mon, 27 Oct 2008 01:32:02 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-3222 the coming together of the 2 best firearms in the world.(in my opinion) the coming together of the 2 best firearms in the world.(in my opinion)

]]> By: D http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-3114 D Thu, 16 Oct 2008 18:17:53 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-3114 Base price is 699.95 without the PS-90 Mag. Base price is 699.95 without the PS-90 Mag.

]]> By: Davis http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2925 Davis Thu, 25 Sep 2008 04:05:58 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2925 It should hold 50 but it would be tight. I know for a fact 20-30 is not a problem. you have to cut a little of the top of the magazine off. I figured I would have to cut the feed lips off to ensure there wouldnt be a blockage. However you actually have to cut a little more off so it clears the bolt. I also smoothed the internal edges so it wouldnt catch/snag on anything. I also placed some small ammounts of soft sided Velcro on the inside bottom of the magazine to soften the first few case ejections so the cases shouldnt deform on ejection. I know people think I'm probably nuts for cutting a Sig Arms 556 magazine but I wasnt about to cut any of my HK magazines up. http://www.make-it-so.com/Guns/PWarms/ARcenter/jpegs/Magazine1-small.jpg http://www.make-it-so.com/Guns/PWarms/ARcenter/jpegs/Magazine2-small.jpg It should hold 50 but it would be tight. I know for a fact 20-30 is not a problem. you have to cut a little of the top of the magazine off. I figured I would have to cut the feed lips off to ensure there wouldnt be a blockage. However you actually have to cut a little more off so it clears the bolt. I also smoothed the internal edges so it wouldnt catch/snag on anything. I also placed some small ammounts of soft sided Velcro on the inside bottom of the magazine to soften the first few case ejections so the cases shouldnt deform on ejection.

I know people think I’m probably nuts for cutting a Sig Arms 556 magazine but I wasnt about to cut any of my HK magazines up.

http://www.make-it-so.com/Guns/PWarms/ARcenter/jpegs/Magazine1-small.jpg

http://www.make-it-so.com/Guns/PWarms/ARcenter/jpegs/Magazine2-small.jpg

]]> By: Steve http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2923 Steve Thu, 25 Sep 2008 01:22:28 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2923 Davis, using the magazine as a brass catcher is awesome! How many cases can a 30 round mag hold before you need to empty it? Davis, using the magazine as a brass catcher is awesome! How many cases can a 30 round mag hold before you need to empty it?

]]> By: Davis http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2920 Davis Wed, 24 Sep 2008 22:01:49 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2920 I just picked one of these up. Put 200+ rounds through it no problem. Its nice to have a very light AR with 50 round capacity. With an empty 30rd AR magazine its a great brass catcher so not only is there no hot brass flying around theres nothing to pick up - great for re-loading. Also I have a pretty big investment in the PS90 and the magazines and the 5.7x28 ammo and re-loading dies so this was a very nice addition that gives me a less expensive alternative to having another carbine that shoots 5.7x28. Also with the price of the 5.7x28 dropping now that its being made in the US its getting very cost effective to shoot. I just picked one of these up.
Put 200+ rounds through it no problem.
Its nice to have a very light AR with 50 round capacity.
With an empty 30rd AR magazine its a great brass catcher so not only is there no hot brass flying around theres nothing to pick up – great for re-loading. Also I have a pretty big investment in the PS90 and the magazines and the 5.7×28 ammo and re-loading dies so this was a very nice addition that gives me a less expensive alternative to having another carbine that shoots 5.7×28.
Also with the price of the 5.7×28 dropping now that its being made in the US its getting very cost effective to shoot.

]]> By: Tractiongrips http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2683 Tractiongrips Mon, 25 Aug 2008 21:08:32 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2683 How about the hot brass spilling out onto your arm? The PS-90 doesn't have much of an issue with that because of how the weapon is held, but an AR-15 would seem to have an issue with the ejection from the mag well. Some sort of catcher may be a good idea. A short barreled version would be interesting, maybe a ten inch with a supressor added. How about the hot brass spilling out onto your arm? The PS-90 doesn’t have much of an issue with that because of how the weapon is held, but an AR-15 would seem to have an issue with the ejection from the mag well. Some sort of catcher may be a good idea. A short barreled version would be interesting, maybe a ten inch with a supressor added.

]]> By: cmblake6 http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2670 cmblake6 Sat, 23 Aug 2008 23:31:50 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2670 Does seem rather a nifty toy. Mind you, I'd want something to plug up the magazine area to keep dirt out. Not a magazine proper, but some form of plastic/rubber plug. Does seem rather a nifty toy. Mind you, I’d want something to plug up the magazine area to keep dirt out. Not a magazine proper, but some form of plastic/rubber plug.

]]> By: Steve http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2668 Steve Sat, 23 Aug 2008 03:08:38 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2668 I did ask but they could not give me a "base" price. I did ask but they could not give me a “base” price.

]]> By: cmblake6 http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2664 cmblake6 Fri, 22 Aug 2008 21:33:31 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2664 Tru dat. WTF. Tru dat. WTF.

]]> By: Steve http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2660 Steve Fri, 22 Aug 2008 03:42:40 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2660 why not? Since when have gun enthusiasts needed good reasons for spending money on new toys? why not? Since when have gun enthusiasts needed good reasons for spending money on new toys?

]]> By: cmblake6 http://www.thefirearmblog.com/blog/2008/08/12/ar-five-seven-57x28mm-ar-upper/#comment-2658 cmblake6 Fri, 22 Aug 2008 03:40:18 +0000 http://www.thefirearmblog.com/blog/?p=2366#comment-2658 Okay. Why? Okay. Why?

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